Analysis

  • max time kernel
    90s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 03:13

General

  • Target

    Payment confirmation.exe

  • Size

    316KB

  • MD5

    09e1f9b49bb6d33d6b88518c9449fde1

  • SHA1

    accd9fdf8c6166e8e887e3bfc92c4cf3cb91ca46

  • SHA256

    432feb3811e7e4993eedfdea5735d5790ec0dd0a660a4940841969ffee54194c

  • SHA512

    d13a7366975ad9ff8a61eaac76d7bf3318b3966341af91b8a7c75d31909ae98e1a8c9e83553f3ffa43a5c54eae220941c9f1dc64607ea5c5320906d5510789e1

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.aviner.co.za
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    NoLimits@

Signatures

  • Executes dropped EXE 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment confirmation.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment confirmation.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4276
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4208
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
    1⤵
      PID:2332

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

      Filesize

      41KB

      MD5

      5d4073b2eb6d217c19f2b22f21bf8d57

      SHA1

      f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

      SHA256

      ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

      SHA512

      9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

      Filesize

      41KB

      MD5

      5d4073b2eb6d217c19f2b22f21bf8d57

      SHA1

      f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

      SHA256

      ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

      SHA512

      9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

    • memory/4208-134-0x0000000000000000-mapping.dmp

    • memory/4208-138-0x0000000000710000-0x0000000000730000-memory.dmp

      Filesize

      128KB

    • memory/4208-139-0x00000000052A0000-0x000000000533C000-memory.dmp

      Filesize

      624KB

    • memory/4208-140-0x0000000005C60000-0x0000000005E22000-memory.dmp

      Filesize

      1.8MB

    • memory/4208-141-0x00000000060A0000-0x0000000006106000-memory.dmp

      Filesize

      408KB

    • memory/4208-142-0x0000000006420000-0x000000000642A000-memory.dmp

      Filesize

      40KB

    • memory/4276-130-0x0000000000DB0000-0x0000000000E06000-memory.dmp

      Filesize

      344KB

    • memory/4276-131-0x00000000082D0000-0x0000000008874000-memory.dmp

      Filesize

      5.6MB

    • memory/4276-132-0x0000000007DC0000-0x0000000007E52000-memory.dmp

      Filesize

      584KB

    • memory/4276-133-0x0000000007F60000-0x0000000007FA4000-memory.dmp

      Filesize

      272KB